9х^3 -16х=27х^2 -48 решите уравнения

9х³-16х=27х²-48 9х³-16х-27х³+48=0 (9х³-2х²)+(16х+48)=0 9х²(х-3)+16(-х+3)=0 -9х²(3-х)+16(3-х)=0 (3-х)(16-9х²)=0 -х+3=0                            16-9х²=0 -х=-3  /(-1)                        -9х²=-16  /9 х=3                                   х²=16/9                                           х1,2=+-4/3 ответ  х1=-4/3    х2=4/3   х3=3